A high-dose-rate brachytherapy unit uses an Ir-192 radioactive source to deliver internal radiation directly to tumors. It provides targeted therapy for cancers of the cervix, prostate, breast, and oral cavity. The applicator places radiation inside or close to the tumor for maximum effect. Sessions are short, often completed in outpatient settings. Remote afterloading technology ensures minimal radiation exposure to staff. Treatment planning systems allow precise dose distributions. The unit is typically installed in specialized oncology centers with dedicated shielded rooms. Provides better tissue preservation compared to external beam methods in selected cancers. Regular QA ensures accurate source strength and positioning. Compliant with AERB guidelines for radioactive medical devices.